ASAHI KASEI
[AK5354]
Low Power 20bit
∆Σ
ADC with PGA
FEATURES
The AK5354 is a low voltage 20bit A/D converter for digital audio system. The AK5354 also includes
Analog input PGA, therefore is suitable for microphone application and etc. As digital power supply of the
AK5354 corresponds to 1.8V, the interface with microprocessor can operate at low voltage. Analog signal
input of the AK5354 is single-ended, therefore, any external filters are not required. As the package is
16pin TSSOP, the AK5354 is a suitable for minimizing system.
FEATURES
1. Resolution : 20bits
2. Recording Functions
•
2-Stereo Inputs Selector
•
Analog Input PGA
•
Monaural Mixing
•
Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
3. ADC Characteristics
•
Input Level : 1.5Vpp@VA=2.5V (= 0.6 x VA)
•
S/(N+D) : 84dB
•
DR, S/N : 89dB
4. 3-wire Serial Control I/F
5. Master Clock : 256fs/384fs
6. Audio Data Format : MSB First, 2’s compliment
•
20bit MSB justified or I
2
S
8. Power Supply
•
VA : 2.1
∼
3.3V (typ. 2.5V)
•
VD : 1.8
∼
3.3V (typ. 2.5V)
9. Power Supply Current
•
IPGA + ADC : 7mA
10. Ta = -40
∼
85°C
11. Package : 16pin TSSOP
AK5354
LIN1
LIN2
IPGA
ADC
HPF
Audio I/F
Controller
RIN1
RIN2
LRCK
BCLK
SDTO
VD
VCOM
VA
VSS
Control Register I/F
Clock Divider
PDN
CSN
CCLK
CDTI
MCLK
MS0054-E-02
-1-
2004/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
